Iron sleeper



F. HARTMANN IRON SLEEPER Filed Feb. 24, 1932 Aug. 30, 1932.

Patented Aug. 30, 1932 FRITZ HARTMANN, OF RHEINHA'USEN' (LOWERIRHINE)-FRIEMERSHEIM, GER-MANY,

, .ASSIGN'OB TO FRIED. KRUPP AKTIENGESELLS CHAFT,

FRIEDRICH-ALFRED-HUTTE,

OF RHEINHAUSEN (LOWER RHINE), GERMANY IEoN SLEEPER Ap plica t ion i iledFebruary 24, 1932, Serial No. 594,900, and in Germany May 15, 1931.

This invention relates to iron sleepers and is particularly applicableto railway sleepers. The invention is concerned with that kind ofsleeper in which the rail foot is held between transverse ribs andconsists in providing each rib onthe side remote from the rail foot withan opening for the reception of the rail-fixing means, and in formingthe rib so that it runs taperingly into the surface of the sleeper onthe same side as the opening is formed. Preferably each rib also runsgradually into the surface of the sleeper at the sides thereof.

In order that the invention may be clearly understood and readilycarried into effect, one construction in accordance therewith will nowbe described by way of example with reference to the accompanyingdrawing, in

l which Figure 1 shows a central longitudinal sec tion through part ofthe sleeper.

' Figure 2 is a plan thereof partly in section, and

Figures 3 and 4 are sections on the lines IIIIII and IVIV respectivelyof Figure 1.

The sleeper 2 is formed at those parts which are intended to support therails with two ribs 8 spaced a small distance apart and having wallswhich are approximately vertical and are parallel to the outer surfaceof the foot 4 of the rail 1. c These ribs are higher than the rail footat the center of the upper surface of the sleeper but become gradually'lower towards the inclined surfaces 6 of the sleeper, and finally runinto these surfaces as is shown particularly in Figures 3 and 4. In thelongitudinal direction of the sleeper the ,r ribs 3 run on the sideremote from the rail foot 4 gradually into the sleeper surface proper 5or the inclined surfaces 6 by means of slightly inclined or taperedsurfaces 7 and 8. In the direction of the central longitudiinal axis thehorizontal upper sleeper surface '5 enters between the inclined surfaces8 by the end of the chamber 9. A horizontal bridge 11 forming part oftherib joins on to this wall 10. I The ribs 3 with the walls 10 and thebridges 11, and the inclined surfaces 7 and 8 with the side walls 18 arepressed out ofvthe sleeper by means of suitable apparatus in the courseof the manufacture of the sleeper.

. In the bridge 11 there is an elongated hole 12 which, in the directionof its longitudinal axis, extendsto the said tongue portion of thesleeper surface 5. This hole serves for the insertion of a holding bolt13. The head 14 of this holding bolt is formedwith a cylindrical orspherical surface 15 which corresponds to the bearing surface 16 on theunderside of the bridge 11. The nut of the holding bolt bears preferablythrough a resilient washer on a clamping plate or clip 17 which bearsagainst both the bottom of the chamber or recess 9 and against the railfoot 4.

The clamping plates or clips 17 are fixed in position longitudinally ofthe rail by means of the vertical walls of the ribs 3. The cylindricalor spherical bearing surface in the inside of each rib and theengagement therewith of the correspondingly shaped bolt head 14 ensurepermanently uniform bearing of the clamping bolts on the sleeper, andthus the rail fixing is stressed uniformly by the forces which are setup here. Further, owing to the fact that the outer foot of the clampingplate or clip 17 lies within the chamber or recess 9, any transmissionof the thrust due to creeping of the rail to the edge of the hole 12 byway of the clamping bolt is avoided, and on the contrary that thrust istaken by the pressed-out walls 18 of the chamber 9 phat is to say by thewhole sleeper materia e What I claim is:

1. An iron sleeper having transverseribs adapted to determine thelateral position of the rail foot, each of these ribs being provided onthe side remote from the rail foot with an opening for the insertion ofthe rail fixing means and on the same side gradually tapering away sothat its surfaces run into the surface of the sleeper in thelongitudinal direction of the latter.

I 'thesurface of the sleeper inrth'e ldngitudimr v di'recti on of thelatter; a steep walI pontionw with anopeningpfon the insertionoftheiraihI Q t r idflast-named'steep; walls-J a 2. An iron sleeper having transt'erse ribs adapted to determine the lateral position of the railfooteach of these ribs being provided v face of thelatterzv on the sideremote from the rail foot With an f opening for the insertion of therail fixing means and on the same side gradually taper- 'ing' away bothin the lonig'tu dinal" and transmeans and on-the same'side' gradiiallfyjtaper-= surface of the sleeper in the IOnigtudinaL rectionpf the latter,a steep wall1portion..be=

'iriglvfo rmed' in "said inclined surfaces. adapted. to'formitogetheruwith the topflw-alll'ofthe erih v and the wallthereofturnedetowardilreirail foot :a bearing f for the head "offfthe railgfiit 7' i141..- An ironsleeper having transverse ribs adapted todetermine the later-aliposition of the rail foot; each offtheseirihs:being pro.-

, Withf an openingifor the insertion;ofitheraili as rail foot ahearingwfor-ithe.headijofl the trail] fixingerneans and on thesame.csidegraduale 1y taperingaway so-thatits surfae'es -rnninto being formed insaid incliiiedsurfaces "adapt; ed toafdrm together with the. top, wallbfiithe rib and the Wall thereof turneditowardfthe fixingholttsaidopeninghaving:aneldneratiad shape and heingiproviddin:saidtop.wall.ands' said steemwall portionias wel Las. in thatpantcent to said 'steepwall'rportiona ofithe sleeper surface properiwhich a5." vAn irionuslepenhavmg.transverse adapted todetermineltheelateralilposition of a thee-rail; footaeachiof' thesevriio s. .heingipr-oi-ivi dedion the .sidelremoteefromtherrailt footfixiiig means and onthe sameside grad-uall.-"y taperingaway so th at itssurfacesrund ntothee surface of the sleeper .in the longitudinal die-i creetion ofthelattemarecess in eachrihi'adapt editoform-a chamber for theone-legofc-et rail: fixing} clip; said I'GCQSSBXtGIldillgfidOWIli'tU-th' e surface offthe. sleeper. properc and being"? fonrnedbythree steepWallsinterruptingesaid .--tapering surfaces, said vopening having an;-elongated shape and beingezprovided zinrthe top' wal-lof-lthe-rib andthat of-fsaidsteep wall hiehi-runs in; parallel W-ithstherailas' well asinrthepart of the sleeper surface =adj acent:

6;: Any iron sleeper having transverse ribs-- adapted to determine :ther-la-t'eral-positio1n-= of;

vided -ion the; side remote from thevrail foot T with an openingfortherinsertion o]? the:- rail? Highway, so that its; surfaces run intothe. f

.is adjasv fixing means and onthe same side gradually taperingaway sothat itssurfaces run into the surface of the sleeper in thelongitudinaldirection of the latter, a. steep Wall portion beingiformedinisaid inclinedsurfacesadapted tolfo'rm;togethert'withithetop walll-ofthe rib and' the Wall thereof turned toward therail foot a bearing forthe head ofthe rail fixing faee'saforesaidcbolt headi'adaptedito theshape of theilatterzri f- T The foregoing specification signed atloo-11:55.,sairhibearingr ha'ving supporting sur= Cologne, Germany, this5th day of Febrm Vided ontheside remote" from atheirailifoot f-IQLFRITZHARTMANN.

